Abstract

, which are consistently, numerically similar to those of analogous alkenes, Wibebg2 has postulated the existence of a variable degree of B—N double bond character for the aminoborane system. This structure results from the participation of the nitrogen’s lone-pair of electrons in the B—N bond.

Schaeffer, R. 8 has proposed the name cycloborazane for this system. Substitutions would be indicated as they are for borazines, nitrogen atoms being in the 1, 3, 5 positions. In the following the designation “trimeric aminoboranes” has been preferred.Google Scholar

Chemical Abstracts has named diboron compounds as derivatives of the hypothetical H2B—BH2, diborane(4). Hence, a compound (RO)CIB—BC1(OR) is properly designated as 1,2-dialkoxy-1,2-dichlorodiborane(4).Google Scholar

To prepare the (liquid) potassium-sodium alloy, the two metals are kneaded in a polyethylene beaker with a metal pestle under petrolether until all the metal has liquified. A pipette, rinsed with petrolether, is slowly lowered through the supernatant liquid to insure the inclusion of petrolether; the liquid metal alloy is drawn into the pipette and transferred to the dropping funnel.Google Scholar

8.

Not more than 10% of the alloy should be added prior to the initiation of the reaction. If the reaction does not start on stirring, gentle warming of the reaction vessel is recommended.Google Scholar